Node.js fs, path & os Modules Tutorial | Node.js Course #3

Node.js fs, path & os Modules Tutorial – Lecture 3 of the Node.js & Express Full Course, a free Node.js and Express.js tutorial for beginners. Learn Node.js fs module, Node.js path module, Node.js os module with hands-on code examples for backend JavaScript development. Lecture 3 covers three core Node.js modules you will use in every project: fs for reading and writing files with promises, path for building cross-platform file paths, and os for system information. We finish by building a small file-organizer script. What you'll learn • fs/promises: readFile, writeFile, appendFile, mkdir, readdir • Error handling with try/catch and ENOENT • path.join, path.resolve, basename, extname • os: cpus, totalmem, freemem, homedir • Building a file organizer script Chapters 00:00 Intro 00:49 Reading and writing files with fs/promises 02:10 Folders and error handling 03:27 The path module 04:47 The os module 06:01 Project: file organizer 07:02 Recap 07:37 Next: Events, streams & buffers Links Altered or synthetic content: The presenter visuals and narration in this video are AI-generated/AI-assisted from the instructor's own photo and an original teaching script. All code, diagrams and teaching content are original. #NodeJS #ExpressJS #NodeJsFsModule